Albertis martin



A. MARTIN.

Wheel-Cultivator.

No. 67.44]. 'I Patent-ed Aug 6 1867.

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ALBERJIS MARTIN, OF OQUAWKA, ILLlNOlS, ASSIGNOR TO HIMSELF AND J. R. TrfARillY.

Letters Patent No. 67,441, dated August 6, 1867; antedated July 27, 1867.

IMPROVEMENT IN CORN-GULTIVATORS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, ALBEn'rIs MARTIN, of Oquawlta, in the county of Henderson, in the State of Illinois, have invented a new and improved Corn-Cultivator; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters occurring on the different figures refer to the same parts.

The nature of my invention consists in improving a corn-cultivator, of the form known as sulky-ploughs, by attaching the shovel-plough beams to a movable frame, which is readily moved laterally by either a crank or lever.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 represents a top view of the cultivator.

Figure 2 represents the manner of attaching the plough-beams to the frame.

B represents the axle, the ends of which, E, are iron, bent so as to obtain the necessary elevation of the frame. The axle is supported by the wheels Q. A Arepresepts the frame, which is bolted securely to the axle, and to the forward part of which are attached the double-trceW and the tongue X, and on the rear endis bolted an iron bar. U, which is bent upward to support the seat It (indicated by dotted lines) at a proper elevation, and to this bar is bolted the cross-bar P. This bar, with the post 0, supports the shaft Y, to which is attached a semicircular cog-wheel, I, and opposite the circular part is the lever K, which, with the crank L, gives motion to the wheel, which gearing 'into the cog-bar H (which is bolted to the plough-frame C) gives lateral motion to the ploughs s, the lever being used when the driver is seated on the seat, and the crank when walking. The frame C is supported by four rollers, m, whioh move freely within a groove at either end of the frame A, and to this .frame are attached two rollers, in a horizontal position, which bear against the axle B with the force of the draught, and to the forward part of this frame are two posts, extending downward and securely braced, to which the plough-beams D and E are respectively attached. To the plough-beams are attached two shovel-ploughs, bolted on to blocks on the sides of the beams, to keep the ploughs a snfiicicnt distance apart. The posts 9, to which the ploughs are bolted, have iron stay-rods, r, passing from the beams through the posts, with nuts on either side of the post to adjust the position of the ploughs. At 0 are shown stays, by which the rear end of the ploughbeams are held in position, and in these are bolt-holes, by which the height of the ploughs is regulated, or, in other words, the depth of the furrow is regulated. These stays may be dispensed with, and with suitable handles the plonghman may direct the ploughs. To the ends of the plough-beams D and E are attached the chains V, which connect with the lever M, and by which the ploughs are raised from the soil, the lever being held when depressed by the hook c. The staples a: on the frame support the lever. At fig. 2 is shown the manner of attaching the plough-beams to the posts of the movable frame. The piece at, one end of which is bent vertically and the other horizontally, is held by straps of iron bolted to the posts and beams, as shown. The joint thus formed admits of a movement either vertically or horizontally.

By this arrangement a free and easy movement of the ploughs laterally is secured, and consequently the ploughing is done better and with less labor.

I am aware that cultivators have been constructed with a lateral adjustability of the ploughs upon the main frame therefore I confine my invention in this respect to the above-described improvements. And I do not broadly claim the use of a double hinge or universal joint for attaching the plough-beam to the frame of the cultivator, but limit my last claim to the use of the peculiar connecting piece t, as set forth.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The plough-frame C, when supported by the rollers m and n, and the arrangement with reference to the frame A, axle B, and the plough-beams D and E, in the manner substantially as described and for the purpose specified.

2. The semicircular cog-wheel I, shaft Y, lever K, crank L, and bar 1?, in combination with the cog-bar H attached to the frame C, substantially as described and for the purpose specified.

8. The connecting-piece t, in combination with the straps attached to the post F and beam D, substantially as and for the purpose set forth.

ALBERTIS MARTIN.

Witnesses WM. 0. RICE, James M. RICE- 

